3, a and 11 are three consecutive terms of an A.P. Value of a is:
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Answer:
a = 7
Step-by-step explanation:
t1 = 3
t2 = a
t3 = 11
Common difference is d.
d = a - 3 ----> eq 1.
d = 11 - a -----> eq 2.
Substitute eq 1 in eq 2,
a - 3 = 11 - a
a + a = 11 + 3
2a = 14
a = 14 / 2
a = 7
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